Patents by Inventor Tatsushi Kobayashi
Tatsushi Kobayashi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20060193565Abstract: The present invention provides a connection method for optical transmission media that allows the worker to make the intended connection easily without damaging the optical connection media and in a manner allowing for effective use of space, as well as an optical connection structure formed in accordance with the aforementioned connection method.Type: ApplicationFiled: February 19, 2004Publication date: August 31, 2006Inventors: Kyoichi Sasaki, Masayoshi Suzuki, Tatsushi Kobayashi
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Publication number: 20060088258Abstract: An optical fiber wiring sheet includes: at least one optical-fiber aligning section including a plurality of two-dimensionally aligned and wired coated optical fibers; and at least one optical-fiber branching part where at least one of the plurality of coated optical fibers branches off as a branching coated optical fiber from the remaining coated optical fibers. The coated optical fibers have ends which constitute optical input/output ports.Type: ApplicationFiled: October 26, 2005Publication date: April 27, 2006Inventors: Kyoichi Sasaki, Masayoshi Suzuki, Tatsushi Kobayashi, Ken Sukegawa
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Publication number: 20060051028Abstract: An optical fiber connecting method not causing any damage to the optical fibers and enabling effective use of space and an optical fiber connection structure formed by the method. The optical fiber connection structure is for connecting optical fibers by means of a component for connecting optical fibers comprising two plugs for aligning at least two optical fibers and connecting them and an adapter for fixing the plugs. Each plug in which an optical fiber is inserted is attached to an adapter in the direction perpendicular to the axial direction of the optical fiber, and the plug and adapter are fixed. A modification may be made in which a latch member is provided to at least one of the plug and adapter, a latch engaging section is provided to the other, the latch member is engaged with the latch engaging section, and the plug and adapter are fixed.Type: ApplicationFiled: July 14, 2003Publication date: March 9, 2006Inventors: Kyoichi Sasaki, Ritsu Kawase, Masayoshi Suzuki, Tatsushi Kobayashi
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Patent number: 6981802Abstract: The invention provides a connection structure of optical fibers and a process for connecting optical fibers, by which the optical fibers are prevented from being damaged, the working time required for the connection is shortened, yield is improved, and efficiency of connection working is improved. The connection structure of optical fibers comprises 2 connecting members and brought face to face with each other and each having a through-hole and 2 optical fibers inserted into the respective through-holes of the connecting members. The 2 optical fibers are connected within the through-hole of one connecting member.Type: GrantFiled: November 5, 2002Date of Patent: January 3, 2006Assignee: Tomoegawa Paper Co., Ltd.Inventors: Kyoichi Sasaki, Ritsu Kawase, Masayoshi Suzuki, Tatsushi Kobayashi
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Publication number: 20050238291Abstract: An optical fiber connection component which is easy to adjust the distance between the optical fiber ends before connection, hardly damages the optical fiber during transportation or connection, and saves the number of parts and the cost, and a method for connecting optical fibers by using this component. The optical fiber connection component used for the optical fiber connection method consists of a connection member having one or more optical fiber through-holes provided with guides for rodlike coupling member at or near both side ends, rodlike coupling members, and a plug having through-holes for rodlike coupling members. The connection member is arranged in the plug slidably with the rodlike coupling member inserted in the plug. Two such optical fiber connection components are opposed to the optical fiber inserted in the through-hole to butt the through-holes of both the connection members against each other.Type: ApplicationFiled: July 14, 2003Publication date: October 27, 2005Applicant: TOMOEGAWA PAPER CO., LTD.Inventors: Kyoichi Sasaki, Ritsu Kawase, Masayoshi Suzuki, Tatsushi Kobayashi
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Publication number: 20050226566Abstract: An optical connecting method for optically connecting ends of a first optical fiber and a second optical fiber secured side to a first plug and a second plug, respectively, wherein the first optical fiber and the second optical fibers are threaded through the first and second plugs, and respective optical fiber is secured to respective plugs with securing parts, a bending step of bending a part of at least one of the first optical fiber and the second optical fibers that is present ahead of the securing part, an aligning step of aligning the first optical fiber and the second optical fibers and fixing a relative position between the first and second plugs, and an abutting step of abutting the first optical fiber and the second optical fibers by releasing flexure of at least one of the first optical fiber and the second optical fibers.Type: ApplicationFiled: April 7, 2005Publication date: October 13, 2005Applicant: Tomoegawa Paper Co., Ltd.Inventors: Kyoichi Sasaki, Masayoshi Suzuki, Tatsushi Kobayashi
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Publication number: 20050220420Abstract: An optical connection structure has an adapter which mounts two connection members mounting two optical fibers brought face to face with each other, a cam member which transports the connection members in an axial direction of the optical fiber, and an urging member which urges the optical fiber in the axial direction of the optical fiber in a state that the pair of optical fibers which are held respectively by the pair of connection members are brought face to face with each other.Type: ApplicationFiled: December 14, 2004Publication date: October 6, 2005Inventors: Kyoichi Sasaki, Masayoshi Suzuki, Tatsushi Kobayashi, Kazufusa Noda
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Patent number: 6937808Abstract: An optical interconnection apparatus which is very easy to handle and does not cause excessive bending and breakage of the optical fibers when connecting with other optical apparatus is provided. The optical interconnection apparatus includes a base sheet and plural optical fibers two-dimensionally routed on the base sheet via an adhesive layer. The optical fibers form a routing pattern having at least a straight part, a crossing part, a curved part or a fiber pitch changing part. The apparatus further includes another base sheet this is adhered on the said routed optical fibers. The two base sheets have a different sizes so that one of the base sheets does not exist in the vicinity of the edge of the other base sheet at which the optical fibers are outwardly extended.Type: GrantFiled: April 29, 2003Date of Patent: August 30, 2005Assignees: Tomoegawa Paper Co., Ltd., Nippon Telegraph and Telephone CorporationInventors: Ritsu Kawase, Kyoichi Sasaki, Masayoshi Suzuki, Tatsushi Kobayashi, Ryo Nagase, Mamoru Hirayama
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Publication number: 20050117859Abstract: An optical fiber tape core comprises an optical fiber core assembly and a coating layer formed of silicone rubber and arranged on at least one side of the optical fiber core assembly. In the optical fiber core assembly, plural optical fiber cores two-dimensionally are arranged in parallel with each other. The silicone rubber which forms the coating layer has a hardness of from 20 to 90 and a tensile strength of from 15 to 80 kgf/cm2.Type: ApplicationFiled: July 14, 2003Publication date: June 2, 2005Inventors: Masayoshi Suzuki, Ritsu Kawase, Kyoichi Sasaki, Tatsushi Kobayashi
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Patent number: 6839475Abstract: The present invention provides an optical interconnection apparatus free from attaching, fixing or adhering when come into contact with each other or with another material, and easy to handle. The optical interconnection apparatus according to the invention comprises a substrate (1), a protective resin layer (2) composed of a silicone based rubber-like or gel-like material on one side or both sides of said substrate, and plural optical fibers (4) which are routed two-dimensionally routed on the substrate and provided at ends thereof with end portions (5) adapted to permit optical interconnections, and said optical fibers being held in place by said protective resin layer, wherein a non-tacky surface layer (8) is provided on the surface of said protective resin layer. The non-tacky surface layer is preferred to be composed of a silicone-based material and having a kinetic friction coefficient of 3.0 or less.Type: GrantFiled: April 26, 2001Date of Patent: January 4, 2005Assignees: Tomoegawa Paper Co., Ltd., Nippon Telegraph and Telephone CorporationInventors: Ritsu Kawase, Ken Sukegawa, Tatsushi Kobayashi, Koichi Arishima, Mamoru Hirayama
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Patent number: 6712525Abstract: An optical inter-connection apparatus according to this invention has plural optical fibers 4, which are routed in a two-dimensional plane and are provided at opposite ends thereof with end portions 5 adapted to permit optical interconnections thereto, and at least one protective resin layer 2 by which the optical fibers are held in place. The protective resin layer 2 is formed from a silicone-base material curable through a condensation reaction with liberation of an oxime or liberation of an alcohol or from a silicone-base material, which is curable by crosslinking through a hydrosilation reaction, and an adhesion promoter, and is joined with a base 1 or another protective resin layer via an adhesive layer 3. The adhesive layer comprises an acrylic pressure-sensitive adhesive. As an alternative, the adhesive layer may comprise a silicone-base pressure-sensitive adhesive which is curable by crosslinking through a hydrosilation reaction.Type: GrantFiled: May 9, 2001Date of Patent: March 30, 2004Assignee: Tomoegawa Paper Co., Ltd.Inventors: Ritsu Kawase, Kyoichi Sasaki, Ken Sukegawa, Tatsushi Kobayashi
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Publication number: 20040013392Abstract: An optical interconnection apparatus which is very easy to handle and does not cause excessive bending and breakage of the optical fibers when connecting with other optical apparatus is provided. The optical interconnection apparatus comprises a base sheet, plural optical fibers two-dimensionally routed on said base sheet via an adhesive layer so as to form a routing pattern having at least a straight part, a crossing part, a curved part or a fiber pitch changing part, and another base sheet adhered on said routed optical fibers, wherein said two base sheets have each a different size and one of said base sheets does not exist in the vicinity of the edge of the other base sheet at which the optical fibers are outwardly extended.Type: ApplicationFiled: April 29, 2003Publication date: January 22, 2004Inventors: Ritsu Kawase, Kyoichi Sasaki, Masayoshi Suzuki, Tatsushi Kobayashi, Ryo Nagase, Mamoru Hirayama
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Patent number: 6632024Abstract: An optical interconnection apparatus comprises an adhesive layer having a 2-dimensional plane, and optical fibers secured on the adhesive layer. The optical fibers are routed on the adhesive layer so as to have at least one of an intersection portion, a bent portion, and a changing portion of fiber pitch, and to have a end portion outwardly projecting from the adhesive layer. The projecting end portion is used for optical interconnection. At least a portion of the circumferential edge surface of the adhesive layer is covered by a flame resistant material at an end of the optical fiber and in the vicinity thereof.Type: GrantFiled: August 29, 2001Date of Patent: October 14, 2003Assignees: Nippon Telegraph and Telephone Corporation, Tomoegawa Paper Co., Ltd.Inventors: Ritsu Kawase, Kyouichi Sasaki, Tatsushi Kobayashi, Takashi Yoshida, Mamoru Hirayama
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Publication number: 20030138187Abstract: The present invention provides an optical interconnection apparatus free from attaching, fixing or adhering when come into contact with each other or with another material, and easy to handle. The optical interconnection apparatus according to the invention comprises a substrate (1), a protective resin layer (2) composed of a silicone based rubber-like or gel-like material on one side or both sides of said substrate, and plural optical fibers (4) which are routed two-dimensionally routed on the substrate and provided at ends thereof with end portions (5) adapted to permit optical interconnections, and said optical fibers being held in place by said protective resin layer, wherein a non-tacky surface layer (8) is provided on the surface of said protective resin layer. The non-tacky surface layer is preferred to be composed of a silicone-based material and having a kinetic friction coefficient of 3.0 or less.Type: ApplicationFiled: October 24, 2002Publication date: July 24, 2003Inventors: Ritsu Kawase, Ken Sukegawa, Tatsushi Kobayashi, Koichi Arishima, Mamoru Hirayama
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Patent number: 6567603Abstract: This invention provides optical interconnection apparatus, which permit easy optical interconnections without a loss in the intactness of a routing pattern of optical fibers, and also their fabrication processes. An optical interconnection apparatus according to this invention has a base film having a two-dimensional plane, plural optical fibers routed on the base film an edge-dam arranged along or in a vicinity of a peripheral edge of the base film, a protective resin layer holding in place and protecting the plural optical fibers routed on the two-dimensional plane of the base film, and end portions located at opposite ends of the optical fibers and adapted to permit optical interconnections. The protective resin layer is formed, for example, by filling a resin material inside the edge-dam arranged along or in the vicinity of the peripheral edge of the base film and then solidifying it.Type: GrantFiled: October 27, 2000Date of Patent: May 20, 2003Assignees: Tomoegawa Paper Co., Ltd., Nippon Telegraph and Telephone CorporationInventors: Ken Sukegawa, Tatsushi Kobayashi, Ritsu Kawase, Koichi Arishima, Mamoru Hirayama
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Publication number: 20030091294Abstract: The invention provides a connection structure of optical fibers and a process for connecting optical fibers, by which the optical fibers are prevented from being damaged, the working time required for the connection is shortened, yield is improved, and efficiency of connection working is improved. The connection structure of optical fibers comprises 2 connecting members and brought face to face with each other and each having a through-hole and 2 optical fibers inserted into the respective through-holes of the connecting members. The 2 optical fibers are connected within the through-hole of one connecting member.Type: ApplicationFiled: November 5, 2002Publication date: May 15, 2003Applicant: Tomoegawa Paper Co., Ltd.Inventors: Kyoichi Sasaki, Ritsu Kawase, Masayoshi Suzuki, Tatsushi Kobayashi
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Patent number: 6519407Abstract: A process is disclosed to fabricate an optical interconnection apparatus in which plural optical fibers having end portions are provided at ports of the optical interconnection apparatus for optical interconnection, the plural optical fibers are routed in a two-dimensional plane such that a routing pattern having at least one type of parts selected from overlapping parts, curved parts or fiber pitch change partsis formed and the end portions of the optical fibers are located extending out from the ports of the optical interconnection apparatus and are protected by protective boots. According to the process, an edge-dam member, which is provided with protruding portions for forming protective boots, is formed along or in a vicinity of a peripheral edge of a base film for supporting the thus-routed optical fibers thereon.Type: GrantFiled: November 17, 2000Date of Patent: February 11, 2003Assignee: Tomoegawa Paper Co., Ltd.Inventors: Ritsu Kawase, Ken Sukegawa, Tatsushi Kobayashi
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Patent number: 6416232Abstract: An optical interconnection apparatus (8) comprises a two-dimensional flexible base film (1), a plurality of optical fibers (4) with end portion for optical connection (e.g., optical connectors), and a protective resin layer (2) of plastic material filled inside edge-dam (7) formed along or in the vicinity of the peripheral edges of the base film (1). The base film (1) has an opening, in which the protective resin layer (2) covers the optical fibers (4) to fix them. A plurality of such apparatus (8) can be stacked to form a laminate. Since the base film (1) has the opening where the optical fibers (4) are routed intricately, the optical interconnection apparatus (8) has improved flexibility and can be used in a narrow space.Type: GrantFiled: September 27, 2001Date of Patent: July 9, 2002Assignees: Tomoegawa Paper Co., Ltd., Nippon Telegraph and Telephone CorporationInventors: Kyoichi Sasaki, Ritsu Kawase, Ken Sukegawa, Tatsushi Kobayashi, Koichi Arishima, Mamoru Hirayama
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Publication number: 20020054739Abstract: An optical interconnection apparatus comprises an adhesive layer having a 2-dimensional plane, and optical fibers secured on the adhesive layer. The optical fibers are routed on the adhesive layer so as to have at least one of an intersection portion, a bent portion, and a changing portion of fiber pitch, and to have a end portion outwardly projecting from the adhesive layer. The projecting end portion is used for optical interconnection. At least a portion of the circumferential edge surface of the adhesive layer is covered by a flame resistant material at an end of the optical fiber and in the vicinity thereof.Type: ApplicationFiled: August 29, 2001Publication date: May 9, 2002Inventors: Ritsu Kawase, Kyouichi Sasaki, Tatsushi Kobayashi, Takashi Yoshida, Mamoru Hirayama
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Patent number: 5486936Abstract: An optically addressed spatial light modulator having a multilayer-type photo conductive layer with a charge carrier generation layer and a charge carrier transport layer having a large mobility. The light modulator also utilizes a liquid crystal composite layer including a transparent resin having a refractive index equal to the refractive index of the liquid crystal. The photoconductive layer and the liquid crystal layer are fixed to each other and the transparent electrodes are fixed to the two opposite sides of these layers. Utilizing the present invention an optically addressed spatial modulator is produced which can write with spectral light such as an infrared ray emitted from a semiconductor laser. The modulator has excellent qualities of sensitivity, light transmittance, hardness and spatial uniformity.Type: GrantFiled: March 22, 1993Date of Patent: January 23, 1996Assignees: Tomoegawa Paper Co., Ltd., Nippon Hoso KyokaiInventors: Hideo Fujikake, Kuniharu Takizawa, Juichi Hirose, Tatsushi Kobayashi